Use foundationdb-dev docker image

Author: Markus Pilman

build/gen_dev_docker.sh

@@ -20,7 +20,7 @@ cd ${tmpdir}
 echo
 
 cat <<EOF >> Dockerfile
-FROM foundationdb/foundationdb-build:latest
+FROM foundationdb/foundationdb-dev:0.11.1
 RUN yum install -y sudo
 RUN echo '%sudo ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
 RUN groupadd -g 1100 sudo